Australian mountaineer missing in Peru's Huayhuash after solo trek; search hampered by device failure

An Australian mountaineer has disappeared in Peru's Cordillera Huayhuash after starting a solo trek and failing to return to Huaraz on September 23. Search efforts by Asociación Socorro Andino Peruano focus on Carhuacocha and Huayllapa, but are complicated by the failure of the tourist's satellite device. The situation is developing, with the outcome uncertain and the cause of the disappearance unknown.